Incubator lamp box



Filed March 25, 192? 2 Sheets-Sheet 1 B Li y 2 1929. R. G. MILL R 1.119.233,

INCUBATOR LAMP BOX Filed March 25, 1927 2 Sheets-Sheet 2 1 amwfm f 3 Patented July 2, 1929.

UNITED STATES PATENTOFFICE.

ROY G. MILLER, OF ROCKFORD, ILLINOIS, ASSIGNOR TO J. W. MILLER (30., OF ROCK- FORD, ILLINOIS, A CORPORATION OF ILLINOIS.

INoUBAros LAMP BOX.

Application filed March 25, 1927.

This invention relates to improvements in lamp boxes or supports for incubators.

The principal object of the invention is to provide a thoroughly fire-proof lamp box for securely holding the lamp in its proper place and protected against sudden. drafts, while also serving to shield the boiler so as to conserve heat and reduce fuel consumption. In the latter connection 1 have provided a jacket enclosingthe boiler and providing a chimney opening at the lower. end thereof, and vent openings at the upper end with a view not only to shielding the boiler to retain the heat therein but also providing for more even temperature regulation than could be secured by the damper control alone.

The invention is illustrated in the accompanying drawings in which Figure 1 is a side View of a lamp box shown mounted 011 the end ofan incubator case;

. Fig. 2 is a plan view of Fig 1; and

Fig. 3 is a vertical section taken on the line 33 of Fig. 1 looking in the direction of the arrows. i i

The same reference munerals are applied to corresponding parts in the three views.

The lamp box or. support illustrated comprises sheet metal brackets 5 fastened, as by means of screws 6, to the side of the case 7. The brackets 5 are suitably secured as by spot welding at 8 to a curved shield 9. The latter has a shelf 10 at the lower end thereof .lor the support oi the lamp, indicated generally by the reference numeral 11. The latter comprises a burner 12 supplied with oil by means of a wick in the usual manner from a bowl 13. The burner has the usual draft openings, indicated at 14C, and is equipped with a bell-shaped chimney 15 for conducting the products of combustion to the boiler 16. The boiler forms. a part of the usual hot water heating system and communicates with the pipes of the system by way of an inflow pipe 17 and a return flow pipe 18. A filling cup 19 is provided to facilitate the filling of the system with water, and a drain plug 20 is provided at the lowest point of the system on the boiler 16 to permit draining the system when the incubator is to be out of service for an extended periodof time. Theburner 12 may be adjusted in the usual manner by means of a stem 21 and the size of the flame is obinafter fully described.

Serial No. 178,219.

served through a window (not shown) provided 111 the wall of the chimney 15. The proper temperature is malntained in the incubator by regulating the draft through the flue 220i the boiler 16, as by means of a damper 23 operated by a thermostatically controlled regulator arm This type of control is well known in the art. The de tails thus far generally described are, for the most part, common to incubators available on the market at the present time. No invention is, therefore, claimed as to these details excepting only in so far. as they con tribute toward the novel arrangement here- The boilerlG, in accordance with my in- Vention, is practically entirely enclosed by a sheet metal jacket 25 supported, as by means of brackets 26 from the side of the case 7 over the chimney 15. The jacket 25 is closed at the bottom by a plate 27 in which an opening 28 is provided to receive the upper end of the chimney 15. The latter, by reason of its tapered form, is easily entered in the opening 28 and is arranged to make a snug fit therein such as will prevent an indraft of air about the chimney into the flue 22, the object being to avoid anyiiame disturbance otherwise commonly causedby sudden gusts of wind. It will be observed that the lamp is removably disposed beneath the boiler on a circular drawor 29. The latter is larger in diameter than the lamp bowl 13 so as to serve as a drip pan therefor and. has spaced supporting pieces 30, within the diameter thereof to serve as supports for the lamp bowl. The removal of the drawer enables the lowering of the lamp a whole to withdraw the upper end of the chimney from the opening 28 in an obviousmanner.

The upper end of the jacket 25 iscut away at the innerside, as indicated at 31, to faciL itate the assembling of the boiler withinlthe jacket, while a cover plate 32 closes the top about the upper end of thei'lue 22. The latter preferably extends beyond the upper end of the boiler 16, as indicated at 83, and passes through an opening 34 provided in the cover plate, thus serving to" center the boiler and jacket with respect to one another so that the walls thereof are substantially evenly spaced on all sides. 1 Lugs 35 provided on the side walls ofthe jacket 25 serve to detachably secure the cover plate and the and opening 31.

' from to the water in the boiler 16, there be ing also acertain amount of by-passing ot the products of combustion about the sides 01" the'boiler within the acket and out tl'irough the v'ent openings 36 of the opening 31. The fact that there is no possibility of an indrarlft ol air about the chimney into the line of theboiler obviously makes for more even heating as the flame is not as subject to the act on of air currents.

'the temperature in the case drops to such an extent as to cause the closing of the damp- 'er- 23, or'at least a considerable restriction ofthe upper end'ot the flue 22, the products of combustion are not allowed to escape -freely to the atmosphere as was otherwise the case, but some are conducted through the jacket about the sides of the boiler for eventual discharge'through the vent openings 36 This naturally increases the heat exchange between the products ot combustion and the water in the boiler 16 and thetemperature in the case is bound to "riseiand cause the damper to be retracted whena normal temperature is reached. Obviously the reaction is quite sensitive and .aj t'airly constanttemperature will be mainf tained in the incubator. It also follows from a consideration of the above that greater economy in fuel consumption is secured as the heat of the boiler is not dissipated by radiation to such extents as heretofore am the heat losses otherwise incident to damper controls arev avoided to a largeextent. The complete shielding ot the lamp, boiler, and chimney outlet, furthermore, el minates lire hazards.

' Iclaim: g I V 1. In an incubator compr sing a case having a supporting bracket thereon, the combination of a lamp supported on said bracket and having a chimney rising therefrom, a boiler having communication with the usual pipe system in said case and providing a vertical flue therethrough communicating at its lower end with the upper end .ot" 'said Cl1lII1I16y,YZL jacket supported fablove said chimney inspaced relation to the outside walls ofs 'aid boiler, said jacket being rigidly supported with said bracket Ifrom said case and having a lower wall providectwith an opening to receive the upper end of said chimney, and means ar- In the event ranged to be removably placed beneath said lamp on said bracket to hold the upper end 01 the chimney removably engaged in its Opening in the jacket, said removable means comprising a drip pan for the bowl of the lamp.

' 2. In an incubator comprising a case having a supporting bracket thereon, the. combination of a boiler having communication with the usual pipe system in said case and providing a vertical flue therethrough, a lamp having a chimney rising therefrom, the upper end of which is arranged to project into the lower end of said flue, and means arranged to be reniovably placed beneath said lamp on said bracket whereby to hold the chimney to the proper elcvatiiim, said 1'61110 able means comprising a drip pan for the bowl of the lamp.

3. In an incubator comprising a case having a supporting bracket thereon, the combination of a boiler having con'imunication with the usual pipe system in said case and providing a vertical flue extending therethrough and beyond the upper end thereof, a lamp arranged to be supported on said bracket and having a chimney rising therefrom, the upper end of which is arranged normally to communicate with the lower end of said flue, and a jacket completely enclosing the sides and ends of said boiler, the same being supported above said chimney and having side jacket walls in spaced relation to the outside walls of said boiler, a bottom jacket wall spaced from the lower end of the boiler flue provided with an opening to snugly receive the upper end of said chimney, and a perforated top jacket wall spaced from the upper end of the boiler provided with an opening receiving the projecting upper end of said boiler flue.

4. In an incubator comprising a case having a supporting bracket thereon. the combination of a lamp supported on said "bracket and having a chimney rising therefrom, a boiler having communication with the usual pipe system in said case and providing a vertical flue thcrethrough communicating at its lower cndwith the upper end of said chimney, a jacket supported above said chimney in spaced relation to the outside walls of said boiler, said jacket being rigidly supported with said bracket from 'said case and having a lower wall provided with an opening to receive the upper end of said chimney, and means removably disposed beneath said lamp on said bracket for holdim the u )er end of the cliimncv h a v I I I, removably engaged in its opening in the acket.

In witness of the foregoing I aflix my signature. 

